EN · alder moth
DE · Erlen-Rindeneule, Erleneule
LV · alkšņu pelēkpūcītes
PL · wieczernica olszówka
The larva when young resembles a bird dropping, but when mature is highly distinctive, being black and yellow with a number of club-like hairs. It feeds on a number of different trees, particularly Alder and Birch.